Loading-coil case.



C. R. YOUNG.

LOADING COIL CASE.

APPLICATION FILED MAY 26. 1916.

Patented July 9, 191&

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(bar/es f2 [/0 ymbq A cast integral with the that the cross sectionsUNITED STATES PATENT OFFICE.

CHARLES R. YOUNG, OF BLOOMIIELD, NEW JERSEY, ASSIGNOR TO WESTERNELECTRIC COMPANY, INCORPORATED, OF

NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LOADING-COIL CASE.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed May 26, 1916. Serial No. 100,057.

To all whom it may concern:

Be it known that I, CHARLES R. YOUNG, a citizen of the United States,residing at Bloomfield, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in Loading-Coil Cases,concise, and exact descriptlon.

This invention relates to loading coil cases, and more particularly toan improved construction of coil compartments therein.

One object of this invention is the production of loading coil cases oflimited maximum outside diameter, constructed in such a manner thatloading coils when potted therein will have a minimum percentage ofchange in efliciency.

Another object is the novel construction of the coil partitions so as tofacilitate assembling the coils in the case.

A well known type of loading coil case comprises a substantiallycylindrical body portion open at one end, and provided at that end witha flange to which the cover ofthe case is bolted or otherwise secured,the interior of the case being divided into compartments for thereception of groups of coils by means of longitudinal partitions body ofthe casing. The greatest external diameter of the case, which is usuallythat of the flange to which the cover is secured, is generallydetermined by the dimensions of existing or standard structures in whichthe case is to be installed. However, it is frequently desirable, inorder to reduce the magnetic leakage, of the compartments be enlarged soas to increase the space between each group of coils and the adjacentwall and-partitionsof the container over that possible with a case ofthe above type having the required number of compartments.

This is accomplished by extending portions of the sides of the case outunderneath the flange to which the case cover is secured, employingremovable partitions between the groups ofcoils mounted within the case,and constructing the compartments in such a manner as to allow a maximumamount of airs ace for each of the coils in order to avoi excessivemagnetic leakage or potting losses.

This invention will be fully understood from the following descriptiontaken in canof which the following is a full, clear,

nection with the accompanying drawings, in which Figure 1 is a verticalsection of a loading coil case with loading coils mounted therein; Fig.2 is a top elevation of the case shown in Fig. 1 with the cover removedand parts' broken away showin the contour of the wall; Fig. 3 is a top eevation of a cable bracket; and Fig. 4 is a sectional view of the cablebracket taken on line 44 of Fig. 3.

The typeof loading coil case constitutlng the embodiment of thisinvention shown 1n the drawings comprises a body portion 5 inclosing acoil-receiving space 6, and having an opening 7 at one end for theintroduction of the coils. ing 7 is a flange 8 having bolt holes 9 nearSurrounding the openits outer periphery. The coils 11 are mounted onspindles 12 which are fitted into bosses 13 on the bottom of the caseand held rigidly in position at the top of the case by means of a spider14 and set screws 15. The spindles 12 are of non-magnetic material, be-

ing preferably of wood, and the spider 14 which is rigidly secured tothe case roper in any suitable manner is usually 0 castiron. The air-gapcoils are assembled on the spindles with wooden spacers 16 placedbetween the coils, and plates 17 of magnetic material placed between thespacers 16 for magnetically shielding adjacent coils on the spindle. Thecoils, after being assembled in t is manner on the spindles, are placedin their respective positions in the case. The inner partitions 18,which are (preferably of sheet iron, are then assemble in the case andsecuredthereto at the top by means of lugs 19 and screws 2' assintherethrou h and into, thetapped ho es in t e tops of n s '21 which arereferably formed integral with and exten to thebottom of the case. Atthe bottom of the case, the partitions are held rigidly in place bybosses 22 which are also preferably cast integral with the case. Thepartitions form part of the magnetic shield of each loading coil and ofeach group of coils.

In former coil casesof this type,. the

the opening 7 and coil receiving space 6 were 1n alinement throughoutthe extent-of each. In accordance with this invention,

the portions of the side wall of thecasing adjacent to the spindles ofthe coils are built out beneath the lip orflange 8 as clearly shown at10 in Figs. 1 and 2. By this construction the space between the coils inthe outer compartments and the walls of their respective compartmentsmay be considerably increased and a corresponding reduction in themagnetic' leakage is obtained. However, it would be impracticable, ifnot impossible, to place a full spindle of coils in an outer compartmentif the partitions were integral with the case or if they were secured inplace before the spindles and coils are inserted. However, by employingcases inthe flange 8. The cover maybe rigidly secured to the case in anywell-known manner, for example, by means of bolts 27 and nuts 28, thebolts passing through the cover and the bolt holes 9 in the lip orflange 8.

Rigidly secured to the top of the cover is a bracket-.29 carrying a pairof cable .clamps 30 for supporting the cable stub above the joint 3%located between it and a nipple 31 which is secured into an aperture inthe casecover. This is for the purpose of preventing breaking orrupturing the lead sheath of the cable stub above the wiped joint due tovibration or bending in handling. After the coils are assembled and inproper position and before the cover is 1. In combination, a case ofmagnetic maing a storage space a portion of which is out of alinementwith said opening, and a removable partition of magnetic material insaid space.

2. In combination, a loading coil case of magnetic material having areceiving space for groups of coils and an opening for the introductionof the coils into said receiving space, a portion of said space beingout of alinement with said opening, and partitions for arrangement insaid space to extend in directions transverse tos aid opening. I

3. In combination, a l6ad g coil case formed of magnetic materialfndprovided with an opening for the introduction of the loading coils, aflange surrounding said opening and having a portion projecting over thecoil receiving space, and partitions of magnetic material adapted forplacement in the coil receiving space after the introduction of thecoils to cooperate with the walls of said case to form magneticallyshielded compartments for. the respective groups of coils. 4 V

In witness whereof, I hereunto subscribe my name this 24th day of May,A. D. 1916.

CHARLES R. YOUNG.

terial provided with an opening and inclos-

